{"instruction": "You are an expert in event extraction. Please extract event types and event trigger words from the input that conform to the schema definition. Return an empty list for non-existent events. Please respond in the format of a JSON string.", "schema": ["patch vulnerability", "discover vulnerability", "ransom"], "input": "NBC affiliate WXIA reported that the city received a ransom demand in bitcoin for $ 6,800 per unit or $ 51,000 to unlock the entire system ."}
{"patch vulnerability": [], "discover vulnerability": [], "ransom": ["a ransom demand"]}